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study guide

ecosystem all the living and nonliving things that interact with each other in an area
producer any organism that produces, or makes it own food; living part of an ecosystem
carbon dioxide a gas found in air; plants need it
photosynthesis the process of using carbon dioxide an water to make food
oxygen a gas found in air; humans need it
consumer an organism that gets energy by eating other organisms; living part of an ecosystem
decomposer an organism that breaks down dead organism and their wastes; living part of an ecosystem
fungi one group of living things that are neither plant nor animal
bacteria one group of organisms that are too small to be seen without a microscope
compost a mixture of soil and decaying matter that provides the materials that plants need
digestion the process that breaks down food into simple materials that an animals's body can use
circulation the process of moving blood in a large, complicated loop through the body
food chain a model of the path of energy through a series of organisms in an ecosystem
food web a model that shows the many connected food chains and feeding relationships
predator an animal that captures and eats other animals
prey the animal that is captured and eaten
disturbance an event that changes an ecosystem for a long period of time
succession the changes that take place in an ecosystem after a disturbance
Created by: Karen Dube